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<?php
namespace Aws\S3;
use Aws\Arn\ArnParser;
use Aws\Arn\S3\AccessPointArn;
use Aws\Exception\MultipartUploadException;
use Aws\Result;
use Aws\S3\Exception\S3Exception;
use GuzzleHttp\Promise\Coroutine;
use GuzzleHttp\Promise\PromisorInterface;
use InvalidArgumentException;
/**
* Copies objects from one S3 location to another, utilizing a multipart copy
* when appropriate.
*/
class ObjectCopier implements PromisorInterface
{
const DEFAULT_MULTIPART_THRESHOLD = MultipartUploader::PART_MAX_SIZE;
private $client;
private $source;
private $destination;
private $acl;
private $options;
private static $defaults = [
'before_lookup' => null,
'before_upload' => null,
'concurrency' => 5,
'mup_threshold' => self::DEFAULT_MULTIPART_THRESHOLD,
'params' => [],
'part_size' => null,
'version_id' => null,
];
/**
* @param S3ClientInterface $client The S3 Client used to execute
* the copy command(s).
* @param array $source The object to copy, specified as
* an array with a 'Bucket' and
* 'Key' keys. Provide a
* 'VersionID' key to copy a
* specified version of an object.
* @param array $destination The bucket and key to which to
* copy the $source, specified as
* an array with a 'Bucket' and
* 'Key' keys.
* @param string $acl ACL to apply to the copy
* (default: private).
* @param array $options Options used to configure the
* copy process. Options passed in
* through 'params' are added to
* the sub commands.
*
* @throws InvalidArgumentException
*/
public function __construct(
S3ClientInterface $client,
array $source,
array $destination,
$acl = 'private',
array $options = []
) {
$this->validateLocation($source);
$this->validateLocation($destination);
$this->client = $client;
$this->source = $source;
$this->destination = $destination;
$this->acl = $acl;
$this->options = $options + self::$defaults;
}
/**
* Perform the configured copy asynchronously. Returns a promise that is
* fulfilled with the result of the CompleteMultipartUpload or CopyObject
* operation or rejected with an exception.
*
* @return Coroutine
*/
public function promise()
{
return Coroutine::of(function () {
$headObjectCommand = $this->client->getCommand(
'HeadObject',
$this->options['params'] + $this->source
);
if (is_callable($this->options['before_lookup'])) {
$this->options['before_lookup']($headObjectCommand);
}
$objectStats = (yield $this->client->executeAsync(
$headObjectCommand
));
if ($objectStats['ContentLength'] > $this->options['mup_threshold']) {
$mup = new MultipartCopy(
$this->client,
$this->getSourcePath(),
['source_metadata' => $objectStats, 'acl' => $this->acl]
+ $this->destination
+ $this->options
);
yield $mup->promise();
} else {
$defaults = [
'ACL' => $this->acl,
'MetadataDirective' => 'COPY',
'CopySource' => $this->getSourcePath(),
];
$params = array_diff_key($this->options, self::$defaults)
+ $this->destination + $defaults + $this->options['params'];
yield $this->client->executeAsync(
$this->client->getCommand('CopyObject', $params)
);
}
});
}
/**
* Perform the configured copy synchronously. Returns the result of the
* CompleteMultipartUpload or CopyObject operation.
*
* @return Result
*
* @throws S3Exception
* @throws MultipartUploadException
*/
public function copy()
{
return $this->promise()->wait();
}
private function validateLocation(array $location)
{
if (empty($location['Bucket']) || empty($location['Key'])) {
throw new \InvalidArgumentException('Locations provided to an'
. ' Aws\S3\ObjectCopier must have a non-empty Bucket and Key');
}
}
private function getSourcePath()
{
$path = "/{$this->source['Bucket']}/";
if (ArnParser::isArn($this->source['Bucket'])) {
try {
new AccessPointArn($this->source['Bucket']);
$path = "{$this->source['Bucket']}/object/";
} catch (\Exception $e) {
throw new \InvalidArgumentException(
'Provided ARN was a not a valid S3 access point ARN ('
. $e->getMessage() . ')',
0,
$e
);
}
}
$sourcePath = $path . rawurlencode($this->source['Key']);
if (isset($this->source['VersionId'])) {
$sourcePath .= "?versionId={$this->source['VersionId']}";
}
return $sourcePath;
}
}
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